You are the network administrator for ExamSheet. Your Windows 2000 Professional computer contains a single hard disk configured with two NTFS partitions C and D. You want to move a folder named Sales from the C partition to a folder named Corp on the D partition. You want the files in the Sales folder to still be compressed after moving the folder. You want the files in the Corp folder to remain uncompressed. You want to ensure that the files are recoverable in case of any disk problems. You also want to move the files with the least amount of administrative effort. What should you do?（）

A. Back up the Sales Folder. Move the Sales folder to the Corp folder. Compress the Sales folder
Back up the Sales folder. Copy the Sales folder to the Corp folder
Copy the Sales folder to a second computer. Then move the Sales folder to the Corp folder
D. Run the commandxcopy.exe c：\Sales d：\Corp /S /C